| ABC ALGOL | ⊕ 1973 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Netherlands | ALGOL 60 extension for symbolic math |
| ABS12 ALGOL | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United Kingdom | Algol 60 with process control extensions |
| AED | ⊕ 1963 | ↓ ↑ ⊕ Specialised Languages | True ALGOL60s | ⊕ United States | Engineering flavour of ALGOL |
| ALCOR | ⊕ 1961 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ International | ALCOR-Gruppe ALGOL |
| ALGAMC | ⊕ 1966 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Russian Federation | Russian Algol dialect |
| Algol 1620 | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | Algol for the IBM 1620 |
| Algol 205 | ⊕ 1960 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | Algol for the Burroughs 205 |
| ALGOL 30 | ⊕ 1960 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | Dartmouth Algol |
| Algol 5 | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Denmark | RC Algol, first version |
| Algol 50 | ⊕ 1998 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | McCarthy's putative theorised Algol 60 precursor |
| Algol 6 | ⊕ 1970 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Denmark | Version 2 of RC Algol |
| ALGOL 60 | ⊕ 1959 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ International | Algorithm Language |
| ALGOL 60 Modified | ⊕ 1977 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ International | 1970 final revision of ALGOL 60 |
| Algol 60 Publishing | ⊕ 1959 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ International | Typographically rich form of Algol 60 |
| ALGOL 60 Revised | ⊕ 1963 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ International | Revised report of IAL committee |
| Algol 62 | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ France | Algol 60 for IBSYS |
| Algol 7 | ⊕ 1978 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Denmark | Version 3 of RC Algol |
| Algol 8 | ⊕ 1986 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Denmark | Version 4 of RC Algol |
| ALGOL C | ⊕ 1966 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | ALGOL 60 with extensions to permit user defined extensions |
| ALGOL C | ⊕ 1981 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United Kingdom | Cambridge educational Algol 60 |
| ALGOL D | ⊕ 1969 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | Hypothetical family of syntax-extended Algol 60s |
| ALGOL N | ⊕ 1967 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Japan | Simple extensible variant to Algol 60 |
| Algol S | ⊕ 1975 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United Kingdom | |
| ALGOL X | ⊕ 1964 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Germany | Algol 60 revision proposal |
| ALGOL(E) | ⊕ 1980 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United Kingdom | ICL Algol 60 |
| ALGOL/ZAM | ⊕ 1967 | ↓ ↑ ⊕ Multi-purpose | True ALGOL60s | ⊕ Poland | Algol for the Polish ZAM computer |
| ALGOL-E | ⊕ 1972 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ||
| ALGOL-GENIUS | ⊕ 1963 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Sweden | ALGOL for SAAB |
| ALGOL-M | ⊕ 1977 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | |
| ALPHA | ⊕ 1961 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Russian Federation | Russian rich maths extension of Algol 60 |
| BABEL | ⊕ 1969 | ↓ ↑ ⊕ Multi-purpose | True ALGOL60s | ⊕ United Kingdom | Extensible NPL ALgol 60 |
| BESM-Algol | ⊕ 1969 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Russian Federation | Algol for the BESM system |
| BETA | ⊕ 1961 | ↓ ↑ ⊕ String and List Processing | True ALGOL60s | ⊕ Russian Federation | Russian List processing ALGOL |
| Calgary ALGOL | ⊕ 1968 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Canada | |
| Case ALGOL | ⊕ 1961 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | ALGOL 60 from Case |
| Chinese Algol | ⊕ 1974 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ China | Algol 60 in Chinese glyphs |
| CONA | ⊕ 1977 | ↓ ↑ ⊕ On-Line | True ALGOL60s | ⊕ United Kingdom | Conversational Algol |
| Constraint Algol | ⊕ 1964 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | Algol 60 with constraints |
| DAP-Algol | ⊕ 1985 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ||
| DASK Algol | ⊕ 1961 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Denmark | Danish ALGOL |
| DCALGOL | ⊕ 1970 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | Data Communications ALGOL |
| DIAMAG | ⊕ 1966 | ↓ ↑ ⊕ On-Line | True ALGOL60s | ⊕ International | interactive extension of ALGOL |
| DIAMAG 2 | ⊕ 1968 | ↓ ↑ ⊕ On-Line | True ALGOL60s | ⊕ France | Time-sharing Algol 60 |
| DMALGOL | ⊕ 1966 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | ALGOL with data extensions |
| Duke ALGOL | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | Duke University ALGOL 60 |
| ECMA ALGOL | ⊕ 1963 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ International | |
| Elliott ALGOL | ⊕ 1960 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United Kingdom | Hoare's seminal ALGOL 60 |
| Extended ALGOL | ⊕ 1964 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | |
| FACIT Algol | ⊕ 1962 | ↓ ↑ ⊕ Multi-purpose | True ALGOL60s | ⊕ Norway | Algol for the FACIT |
| Formula ALGOL | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | ALGOL dialect for algebraic manipulation |
| GENIE | ⊕ 1961 | ↓ ↑ ⊕ Multi-purpose | True ALGOL60s | ⊕ United States | Algorithmic language for the Rice R1 |
| GIER Algol | ⊕ 1960 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Denmark | Naur's seminal ALGOL 60 |
| GIER Algol II | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Denmark | 2nd version of the Gier algol |
| GIER Algol III | ⊕ 1963 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Denmark | 3rd version of Naur's Gier algol |
| HALGOL | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | |||
| HAYNAM Algol extensions | ⊕ 1965 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | |
| Hoare super-structured Algol | ⊕ 1972 | ↓ ↑ ⊕ Experimental and other | True ALGOL60s | ⊕ United Kingdom | Algol with sets, subsets, orders etc |
| House Algol 60 | ⊕ 1983 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Australia | Algol 60 with Modula-style scoping |
| IFIP ALGOL | ⊕ 1964 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ International | |
| IMP | ⊕ 1965 | ↓ ↑ ⊕ Multi-purpose | True ALGOL60s | ⊕ United States | Extensible dialect of ALGOL-60 |
| Kidsgrove Algol | ⊕ 1963 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United Kingdom | |
| LOGALGOL | ⊕ 1960 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Austria | Set-based ALGOL variant from IBM Vienna |
| macro-Algol | ⊕ 1967 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ France | |
| MALGOL | ⊕ 1965 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Russian Federation | Algol 60 for the MINSK-2 |
| Minority report Algol 68 | ⊕ 1968 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ International | |
| NU ALGOL | ⊕ 1965 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Norway | Norwegian University Algol |
| Oak Ridge ALGOL compiler | ⊕ 1961 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | Algol compiler for CDC 1604 |
| PALGO | ⊕ 1962 | ↓ ↑ ⊕ Multi-purpose | True ALGOL60s | ⊕ Italy | Olivetti Algol 60 variant with lambda calculus |
| PS-ALGOL | ⊕ 1981 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United Kingdom | Persistent Algol |
| RegneCentralen ALGOL | ⊕ 1960 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Denmark | Danish family of Algol 60 languages |
| Revised ALGOL 60 | ⊕ 1969 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ International | ALGOL 60 dialect |
| S-Algol | ⊕ 1979 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United Kingdom | St Andrew's Algol |
| SCALP | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | Dartmouth small Algol system |
| SCATRAN | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | Ohio SU Algol |
| SDC String Algol | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | ALGOL with string extensions |
| SESPOOL | ⊕ 1977 | ↓ ↑ ⊕ Multi-purpose | True ALGOL60s | ⊕ United Kingdom | Simple Extensible Systems PrOgramming Oriented Language |
| SFD-ALGOL | ⊕ 1969 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | |
| SIMPL | ⊕ 1974 | ↓ ↑ ⊕ Specialised Languages | True ALGOL60s | ⊕ United States | Horizonatally sequenced Algol |
| SMALGOL | ⊕ 1961 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | |
| SMALGOL-61 | ⊕ 1961 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | |
| Subset Algol 60 | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | WG 2.1 Simple Algol 60 dialect | |
| Syncretic | ⊕ 1963 | ↓ ↑ ⊕ Specialised Languages | True ALGOL60s | ⊕ United States | Abstract Model Description Language |
| TALK | ⊕ 1963 | ↓ ↑ ⊕ Business Data Processing | True ALGOL60s | ⊕ United Kingdom | EE Commercial Autocode |
| Trieste Algol | ⊕ 1969 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Italy | Algol 60 with a 2-dimensional printing language |
| UNIVAC 1108 ALGOL | ⊕ 1966 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Norway | |
| USS 90 Algol | ⊕ 1962 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Italy | Algol for the USS 90 |
| VALGOL | ⊕ 1963 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | ALGOL subset |
| VALGOL II | ⊕ 1964 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | |
| Whetstone Algol | ⊕ 1964 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United Kingdom | |
| Wisconsin Algol | ⊕ 1966 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ United States | |
| X1 Algol 60 | ⊕ 1961 | ↓ ↑ ⊕ Numerical Scientific | True ALGOL60s | ⊕ Netherlands |